ML>> have you looked at 7-zip?
 
 DS> Yes I did.  It unzips PKZIP files fine.  But unless there is a setting I
 DS> have not found, when it compresses files it does so in a 7Z format and
 DS> not a PK format.

 ML> some deeper searching seems to turn up a command line option -t...

 ML> 7z.exe u -tzip classics.zip classics -r

 ML> does that help?

Very much so -- thanks.  Now I have two possibles, 7z.exe with -tzip
switch and the zip/unzip from infozip.

                               Dale Shipp
                  fido_261_1466 (at) verizon (dot) net
                              (1:261/1466)



... Shipwrecked on Hesperus in Columbia, Maryland. 00:05:40, 19 Sep 2015
___ Blue Wave/DOS v2.30

--- Maximus/NT 3.01